Specifications

ip helper-address Configuring Broadcast Settings
Enterasys Matrix N Standalone (NSA) Series Configuration Guide 16-21
Example
ThisexampleshowshowtoenableforwardingofDomainNamingSystemUDPdatagrams(port
53):
Matrix>Router(config)#ip forward-protocol udp 53
ip helper-address
UsethiscommandtoenableDHCP/BOOTPrelayandtheforwardingoflocalUDPbroadcasts
specifyinganewdestinationaddress.
Syntax
ip helper-address address
no ip helper-address address
Parameters
Defaults
None.
Mode
Routercommand,Interfaceconfiguration:Matrix>Router(config‐if(Vlan<vlan_id>))#
Usage
Thiscommandworksinconjunctionwiththeipforward‐protocolcommand(“ipforward‐
protocol”onpage 16‐20),whichdefinestheforwardprotocolandportnumber.Youcanusethis
commandtoaddmorethanonehelperaddressperinterface.
The“no”formofthiscommanddisablestheforwardingofUDP
datagramstothespecified
address
Example
ThisexampleshowshowtopermitUDPbroadcastsfromhostsonnetworks191.168.1.255and
192.24.1.255toreachserversonthosenetworks:
Matrix>Router(config)#ip forward-protocol udp
Matrix>Router(config)#interface vlan 1
Matrix>Router(config-if(Vlan 1))#ip helper-address 192.168.1.255
Matrix>Router(config)#interface vlan 2
Matrix>Router(config-if(Vlan 2))#ip helper-address 192.24.1.255
address Specifiesade stinationbroadcastofhostaddressusedwhen
forwarding.